TW432082B - Isocyanate compositions for blown polyurethane foams - Google Patents

Isocyanate compositions for blown polyurethane foams Download PDF

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Publication number
TW432082B
TW432082B TW087110925A TW87110925A TW432082B TW 432082 B TW432082 B TW 432082B TW 087110925 A TW087110925 A TW 087110925A TW 87110925 A TW87110925 A TW 87110925A TW 432082 B TW432082 B TW 432082B
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Taiwan
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light
keyboard
light guide
film
creation
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TW087110925A
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Chinese (zh)
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Sachchida Nand Singh
Steven Burns
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Huntsman Int Llc
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C265/00—Derivatives of isocyanic acid
    • C07C265/14—Derivatives of isocyanic acid containing at least two isocyanate groups bound to the same carbon skeleton
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
    • C08G18/4205—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups
    • C08G18/4208—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups containing aromatic groups
    • C08G18/4211—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups containing aromatic groups derived from aromatic dicarboxylic acids and dialcohols
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
    • C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
    • C08J9/141—Hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
    • C08J9/143—Halogen containing compounds
    • C08J9/144—Halogen containing compounds containing carbon, halogen and hydrogen only
    • C08J9/146—Halogen containing compounds containing carbon, halogen and hydrogen only only fluorine as halogen atoms
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2110/00—Foam properties
    • C08G2110/0025—Foam properties rigid
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2110/00—Foam properties
    • C08G2110/0041—Foam properties having specified density
    • C08G2110/005—< 50kg/m3
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04—Polyurethanes

Abstract

Rigid polyurethane foams are prepared from an isocyanate composition containing diphenylmethane diisocyanate, three ring oligomers of polyphenylene polymethylene polyisocyanate and higher homologues of polyphenylene polymethylene polyisocyanate.

Description

M432082 五、新型說明： 【新型所屬之技術領域】 本創作係有關於一種導光膜片結構，特別是指-種 發光鍵盤之單層式導光膜片結構。 【先前技術】 按目前筆記型電腦由於具有便於隨身攜帶及處理文 =料和即時通訊之功能，故而廣受市場業者及使用者之 月疋及㈣，而目前部份筆記型電腦鍵盤係採用薄型觸控 鍵盤結構’有關筆記型電腦鍵盤其主要係於字鍵之鍵帽與 j板間組裝連結有-架橋式支撐結構，而該等習知筆記型 電腦之薄型架橋式鍵盤結構具有體積超薄、重量輕巧及操 作精確之優點；經查，本國相關專利前案中，申請人公司研 發並申請獲准有：發光鍵盤之導光板及背光模組（本國專 利證書號數：M306689號）專利案，該專利案主要係於導 光板上凸設有卡合構造以利於直接組裝架橋元件，然其並 無對各別按鍵及LED光源間距作加強導光之設計，故使得 距離LED光源較遠之按鍵則顯得透光亮度明顯不足；繼而， 有關習知發光鍵盤係利用三層式導光板架構以作為鍵盤之 背光元件，即其係於一導光板之下方黏貼有一反射片纤 Χ增加向上反射之光量，而於該導光板之上方則係黏貼有 一柵格狀之遮光片（ΡΕΤ)以阻隔並導引投射光線，惟於實務 上，該下層反射片及上層遮光片之結構除了增加整體導光 板之厚度及成本外，且其在組裝時需要將三層遮光片、導 3 M432082 光板及反射片逐對準疋位並膠合成一體，其明顯增加習 知導光板組裝上的困難度，實有加以改良之必要； 有鑑於此，本案創作人遂以其多年從事電腦鍵盤之製 每及叹4貫務經驗，而積極研究改良，並經多次實物樣品 製作及測試，進而具體改良習知電腦鍵盤之導光板的上述 缺點’終致完成本創作。 【新型内容】 i 賴作絲供—種導光膜片結構，其欲解決之主要問 •題係針利知三層式導妹㈣較為㈣及多層厚度的 缺點；其欲解決之次要問題係針對習知導光鍵盤距離光源 較遠之按鍵係顯得透光亮度不足的缺點，而本創作即針對 習知發光鍵盤之導光板的問題點，而加以研發改良突 俾達到大幅簡化其導光結構及增進其鍵盤之透光效果； 本創作係一種發光鍵盤之導光膜片結構，其係將一 導光膜片組裝於一鍵盤之底面位置，纟中於該導光膜片之 #底面係印刷塗覆有一反射層，於該導光膜片之頂面係印刷 塗覆有-柵格狀之遮光層，且於該導光膜片上之適處係陣 .列佈設有複數個環凹穴構造，其中該遮光層對應於鍵盤字 鍵之適處係具有穿孔構造，俾能有效導引投射光線至字鍵 位置，本創作之單層式導光膜片具有降低厚度及組褒簡易 之效能，進而能具體增進整體發光鍵盤之均勻導光效果。 有關於本創作之構造特徵及實際功效，兹舉一較=之實 4 M432082 施例並佐以圖式”細說明如后，期使審查Μ能深入瞭解 本創作。 【實施方式】 請參閱圖1至圖3之本創作較佳施例所示，本創作係 -種發光鍵盤之導光膜片結構，其係'將—導光膜片扣組 裝於一鍵盤10之底面位置；其中， 該導光膜片20係屬於-透明塑性材質之薄膜片，於 •該導光膜片2Q之底面係'印刷塗覆有-反射層21’俾能集 春t增加反射光線之向上投射光量，於該導光膜片2〇之頂 面係印刷塗覆有-概呈栅格狀之遮光層22，且其對應於 子鍵位置係具有穿孔221構造，俾能有效遮光阻隔並導引 技射光線至其上端之字鍵，繼而，於該導光膜片Μ上對 應於字鍵位置係分別陣列佈設有複數個不同深淺度之環 凹穴201，而該複數個陣列狀之環凹穴2〇1係分別具有不 同之涑淺度及佈設密度，俾能因應其與發光源之不同距離 • 以適度地調整產生出相同的垂直反射光亮度，即由於當該 -複數個環凹穴201距離發光源較遠之狀況時，而該較遠之 複數個環凹穴201則係因應設計成具有較深之外環周面 以增加其向上垂直反射光亮度，同理，依光線亮度與光源 距離之關係，則各該環凹穴2〇1之深淺度係因應其與光源 距離而由淺至深之比例遞增，俾能調整達到使各個按鍵具 有均勻之垂直反射光亮度，俾具體增進整體鍵盤之均勻導 5 M432082 光效果；至於，該導光膜片2〇上之環凹穴2〇1導光構造 亦可以由印刷塗覆複數個油墨反光點構造替代之，其同樣 可以藉由陣列佈設複數個油墨反光點構造以達到增進其 導光效果者。 該鍵盤10係包括：數個架橋丨丨、數個透光鍵帽12、數個 透光彈性7L件14、一透光薄膜電路板15及一按鍵框板16 ; 其中，該透光鍵帽12係一概呈方形之透光按壓元件，於該 . 鍵帽12底面成型有二對稱之樞接槽121及二導滑槽122,而 鲁於其令央位置則成型有一按壓部125，且該二摇接槽121 及一導μ槽122係對應枢接於該架橋11頂緣之樞軸111及 二滑軸112，而該架橋π底緣之二滑軸113及樞軸U4則係 對應樞接在該按鍵框板丨6上之二導滑槽丨63及承接槽丨 内，而該透光之彈性元件14係頂掣於該透光鍵帽12底面之 按壓部125，其中該複數個彈性元件14係對應固設於一墊 片1 3上，而於該墊片13上係穿設有複數個透孔131，俾使該 • 墊片13得以组設於該按鍵框板16之頂面，且該彈性元件14 係對應位設於該透光薄膜電路板15及該按鍵框板16之透 孔161頂面，故而該彈性元件14内之按壓柱141係可向下按 壓觸動導通該薄膜電路板15，而該按鍵框板16之透孔i6i 則係具有導光作用； 該薄膜電路板15係一透光薄膜板上形成有若干電路 以控制按鍵輸入訊號，於該薄膜電路板15對應該透光鍵 6 M432082 帽12之中心點位置係分別形成有—電路之斷路畔⑸ 且於各該電路之斷路點151二端係分別形成有對岸之導 觸端，於該薄膜電路板15底面端緣適當位置係電性連結 有數個發光二極體LED153光源，俾提供鍵盤之導光效^ 者》 &gt;月匕 有關本創作之主要構造特徵及實際使用效能，則謹作 扼要說明如下：本創作的單層式導光膜片2〇係組装於一 發光鍵盤H)之底面，其主要係於該導光膜片2〇之頂面印 _刷塗覆有-概呈柵格狀之遮光層22,且於該導光膜片加 之底面係印刷塗覆有-反射層2卜俾能集中反射光線之 投射光量，本創作之單層式導光膜片2〇則具有降低厚度 及組裝簡易之效能，且其亦能藉由該導光膜片2〇上陣列 佈設之複數個不同深淺度之環凹穴2〇丨或印刷塗覆之油 墨反光點構造，俾能因應其與發光二極體LEDi53光源之 不同距離以適度地調整產生出相同的垂直反射光亮度’進 • 而能具體增進整體鍵盤之均勻導光效果者。 綜上所述，本創作係於發光鍵盤内組裝有一導光膜 片，且其係屬於一單層式導光膜片構造，俾達到降低整體 鍵盤厚度及增進其組裝和導光效果，是以，本創作確實具 有創新性和進步性，實已符合我國專利法有關新型專利之 申請要件的規定，爰乃依法提起專利申請。 7 M432082 【圖式簡單說明】 圖1 ··係本創作發光鍵盤之導光結構的立體分解 顯示一導光膜片組裝於一鍵盤上。刀 圖2··係圖1發光鍵盤之導光結構的局部放大 圖，其係顯示單一按鍵之組裝構造。 圖3.係圖1之導光膜片構造的剖面示意_ ° • 【主要元件符號說明】 10 :鍵盤 11 :架橋 111 ·彳區轴 112 :滑軸 113 :滑軸 114 :樞車由 12 .透光鍵帽 121 :樞接槽 籲122 :導滑槽 125 :按壓部 &quot;13 :墊片 131 :透孔 14 :彈性元件 141 :按壓杈 15 :薄膜電路板. 151 :斷路點 M432082 ---- aV λΡ 4- 新型專利說明書 (本說明書格式.順序，請勿任意更動，※記號部分請勿填寫） ※申請案號：θ q2qv3^ ※申請曰：胤2. OS ^PC分類：（5〇6F % (2006•⑽ 一、 新型名稱：（中文/英文） 發光鍵盤之導光膜片結構 二、 中文新型摘要： ， 本創作係一種發光鍵盤之導光膜另結構，其係將— 參 導光膜片組裝於一鍵盤之底面位置，其中於該導光膜片之 底面係印刷塗覆有一反射層，於該導光膜片之頂面係印刷 塗覆有一柵格狀之遮光層，且於該導光膜片上之適處係陣 列佈設有複數個環凹穴構造，其中該遮光層對應於鍵盤字 鍵之適處係具有穿孔構造，俾能有效導引投射光線至字鍵 底面位置’本創作之單層式導光膜月具有降低厚度及組裝 簡易之效能，俾能增進發光鍵盤之均勻導光效果者。 Φ三、英文新型摘要： /、、申請專利範圍： 、—種發光鍵盤之導光膜片結構，其係將—導光 獏片組裝於—鍵盤之底面位置；其中於該導光膜片之底 面係印刷塗覆有一反射層，於該導光膜片之頂面係印刷 塗覆有一柵格狀之遮光層，且於該導光膜月上之適處係 陣列佈設有複數個環凹穴構造。 2、依據申請專利範圍第丨項所述發光鍵盤之導光 、片、。構，其中該遮光層對應於鍵盤字鍵之適處係具有 穿孔構造’俾能有效導引投射光線至字鍵位置。 ▲ 3、依據申請專利範圍第2項所述發光鍵盤之導光 :片、、’。構，其中該導光膜片上之複數個環凹穴構造係上 下對應於鍵盤字鍵位置。 * 4依據申請專利範圍第1項所述發光鍵盤之導光 二片、σ構，其中於該導光膜片之頂面適處係印刷塗覆有 複數個油墨反光點構造。 5、依據申請專利範圍第2項所述發光鍵盤之導光 構’其中該㈣係包括：數個架橋、數個透光鍵 帽\數個透光彈性元件、—透光_電路板及—按鍵框 板’於錢光鍵帽底面係對應樞接於該架橋頂緣，而該 架橋底緣則係對應拖接在該按鍵框板上，而該透光彈性 凡件係頂掣於該透光鍵帽底面之按壓部，其中該複數個 、光彈!生7L件铩對應固設於一墊片上’而該墊片係組設 M432082 於該按鍵框板之頂面，且該透光彈性元件係對應位設於 該透光薄膜電路板及該按鍵框板之透孔頂面，而該按鍵 框板之透孔係上下對應於該遮光層之穿孔位置。 6、依據申請專利範圍第5項所述發光鍵盤之導光 膜片結構’其巾該透光薄財路板上形成有若干電路以於 制按鍵輸人訊號，於該薄膜電路板對應該透光鍵帽之中： 點位置係分別形成有-電路之斷路點，而該彈性㈣内之 按壓柱係、可向下按壓觸動導通㈣膜電路板，且於該薄膜 電路板底面端緣適處係電性連結有數個發光二極體LED。M432082 5. Description of the new type: [Technical field to which the new type belongs] This creation relates to a light guide film structure, especially a single-layer light guide film structure of a light-emitting keyboard. [Previous technology] According to the current notebook computers, because they have the functions of carrying and processing documents and instant messaging, they are widely used by market operators and users. At present, some notebook computer keyboards are thin "Touch keyboard structure" related to the notebook computer keyboard, which is mainly connected between the keycaps of the word keys and the j-board, a bridge-type support structure is assembled, and the thin bridge-type keyboard structures of these conventional notebook computers have an ultra-thin volume. The advantages of light weight and precise operation; after investigation, in the related national patent case, the applicant company developed and applied for: the light guide plate and backlight module of the illuminated keyboard (national patent certificate number: M306689) patent case, The patent is mainly provided with a latching structure protruding on the light guide plate to facilitate the direct assembly of the bridge element. However, it does not design a light guide to strengthen the distance between the individual keys and the LED light source, so that the keys that are far away from the LED light source are designed. It appears that the brightness of light transmission is obviously insufficient; then, the conventional light-emitting keyboard uses a three-layer light guide plate structure as the backlight element of the keyboard, that is, A reflective sheet fiber X is pasted below a light guide plate to increase the amount of light reflected upward, and a grid-shaped light shielding sheet (PET) is pasted above the light guide plate to block and guide the projected light, but it is practical In addition to the structure of the lower reflecting sheet and the upper shading sheet, in addition to increasing the thickness and cost of the overall light guide plate, it needs to align the three layers of shading sheet, the light guide 3 M432082 light plate and the reflecting sheet one by one during assembly and glue them together. Integration, which obviously increases the difficulty of the assembly of the conventional light guide plate, and it is necessary to improve it. In view of this, the creator of this case has actively studied and improved with his many years of experience in computer keyboard system. , And after several physical sample production and testing, and then specifically improve the above-mentioned shortcomings of the conventional computer keyboard light guide plate 'finally completed this creation. [New content] i Lai Zuo silk supply-a kind of light guide film structure, the main problems to be solved • The problem is that the three-layer guides are more complicated and have multiple layers of thickness; the secondary problems that they want to solve are aimed at The keys of the conventional light-guiding keyboard that are far away from the light source have the disadvantage of insufficient light transmission. This creation is to address the problems of the light-guiding plate of the conventional light-emitting keyboard, and to develop and improve the projection to greatly simplify its light-guiding structure and Enhance the light-transmitting effect of its keyboard; This creation is a light-guide film structure of a light-emitting keyboard, which is assembled with a light-guide film on the bottom surface of a keyboard, and printed on the # bottom surface of the light-guide film Coated with a reflective layer, the top surface of the light guide film is printed with a grid-shaped light-shielding layer, and a suitable array is arranged on the light guide film. The array is provided with a plurality of ring recesses. Structure, where the light-shielding layer corresponds to the perforated structure of the keyboard key, and it can effectively guide the projected light to the position of the key. The single-layer light guide film of this creation has the effect of reducing the thickness and simplifying the assembly. , Which can be specifically improved The uniform light guide effect of the whole illuminated keyboard. Regarding the structural features and actual effects of this creation, I would like to compare it with the actual 4 M432082 examples and add a diagram "detailed description as follows, so that the reviewer can understand the creation in depth. [Embodiment] Please refer to the figure As shown in the preferred embodiment of this creation from 1 to 3, this creation is a light-guide membrane structure of a kind of light-emitting keyboard, which is composed of a light guide membrane buckle assembled on the bottom surface of a keyboard 10; The light-guiding film 20 is a transparent plastic film. The bottom surface of the light-guiding film 2Q is 'printed and coated with a -reflection layer 21'. It can gather spring t to increase the amount of light projected upward. The top surface of the light guide film 20 is printed and coated with an approximately grid-like light-shielding layer 22, and its position corresponding to the sub-keys has a perforated 221 structure, which can effectively block light and guide light. The zigzag key to its upper end, and then, a plurality of ring cavities 201 of different depths are arranged in an array on the light guide film M corresponding to the position of the word key, and the plurality of array-shaped ring cavities 2 are arranged in the array. 1 series has different lightness and layout density. Different distances • The same vertical reflected light brightness is generated by moderate adjustment, that is, when the plurality of ring cavities 201 are far away from the light source, the farther ring cavities 201 are It should be designed to have a deep outer peripheral surface to increase its upward vertical reflected light brightness. Similarly, depending on the relationship between the brightness of the light and the distance from the light source, the depth of each ring recess 201 is based on its distance from the light source. As the ratio increases from shallow to deep, it can be adjusted to make each key have a uniform vertical reflected light brightness, specifically to improve the uniform light guide effect of the entire keyboard 5 M432082; as for the ring recess on the light guide film 20 The cavity 201 light guide structure can also be replaced by printing and coating a plurality of ink reflective dot structures, which can also be arranged by arraying a plurality of ink reflective dot structures to improve its light guiding effect. The keyboard 10 series includes: Several bridges 丨, several transparent keycaps 12, several transparent elastic 7L pieces 14, a transparent film circuit board 15 and a key frame board 16; among them, the transparent keycaps 12 are generally square Light press There are two symmetrical pivot grooves 121 and two guide slide grooves 122 formed on the bottom surface of the keycap 12, and a pressing portion 125 is formed at the center position of the keycap 12, and the two swing grooves 121 and one guide μ The groove 122 corresponds to the pivot shaft 111 and the two sliding shafts 112 pivotally connected to the top edge of the bridge 11, and the two sliding shaft 113 and the pivot U4 to the bottom edge of the bridge π are correspondingly pivoted to the key frame plate 6 The second guide chute 丨 63 and the receiving groove 丨, and the transparent elastic element 14 is pressed against the pressing part 125 on the bottom surface of the transparent keycap 12, wherein the plurality of elastic elements 14 are correspondingly fixed in one The gasket 13 is provided with a plurality of through holes 131 through the gasket 13, so that the gasket 13 can be set on the top surface of the key frame plate 16, and the elastic element 14 corresponds to The top surface of the transparent film circuit board 15 and the through hole 161 of the key frame plate 16 is located on the top surface of the transparent film circuit board 15. Therefore, the pressing post 141 in the elastic element 14 can be pressed down to conduct the thin film circuit board 15. The through hole i6i of the plate 16 has a light guiding effect; the thin-film circuit board 15 is a light-transmitting thin-film plate formed with a number of circuits to control key input signals. The center points of the thin film circuit board 15 corresponding to the light-transmitting keys 6 M432082 and the cap 12 are respectively formed with the circuit-breaking edge of the circuit, and the opposite ends of the circuit-breaking point 151 are respectively formed with the opposite shore conductive contacts. Several light-emitting diode LED153 light sources are electrically connected at appropriate positions on the bottom edge of the thin-film circuit board 15 to provide the light-guiding effect of the keyboard. , I would like to briefly explain as follows: The single-layer light guide film 20 of this creation is assembled on the bottom surface of a light-emitting keyboard H), which is mainly printed on the top surface of the light guide film 20 _ brush coating It is covered with a light-shielding layer 22 in the shape of a grid, and the light guide film and the bottom surface are printed and coated with a -reflection layer 2 which can reflect the amount of light projected. The single-layer light guide film of this creation The sheet 20 has the effect of reducing the thickness and the ease of assembly, and it can also use a plurality of ring recesses 20 of different depths or light-reflecting dots arranged on the light guide film sheet 20 in an array. Structure, can not respond to its inconsistency with light-emitting diode LEDi53 light source Adjusting at the same distance to produce the same brightness of the vertical reflected light ’can moderately improve the uniform light guiding effect of the overall keyboard. In summary, this creation is a light guide film assembled in a light-emitting keyboard, and it belongs to a single-layer light guide film structure, which can reduce the overall keyboard thickness and improve its assembly and light guide effect. This creation is indeed innovative and progressive, and it has indeed complied with the requirements of the new patent application requirements in China's patent law. 7 M432082 [Brief Description of the Drawings] Figure 1 · The three-dimensional decomposition of the light-guiding structure of the light-emitting keyboard of this original creation. A light-guiding film is assembled on a keyboard. Knife Fig. 2 is a partial enlarged view of the light guide structure of the illuminated keyboard of Fig. 1, which shows the assembly structure of a single key. Figure 3. Schematic cross-section of the structure of the light guide film in Figure 1. ° [Description of main component symbols] 10: Keyboard 11: Bridge 111 · Zone axis 112: Sliding axis 113: Sliding axis 114: Pivot by 12. Transparent keycap 121: pivot joint groove 122: guide groove 125: pressing section &quot; 13: gasket 131: through hole 14: elastic element 141: pressing branch 15: thin film circuit board. 151: breaking point M432082- -aV λΡ 4- New patent specification (the format and order of this specification, please do not change arbitrarily, please do not fill in the mark) ※ Application number: θ q2qv3 ^ ※ Application: 胤 2. OS ^ PC classification: (5 〇6F% (2006 • ⑽ I. Name of new model: (Chinese / English) Light guide membrane structure of illuminated keyboard II. Abstract of Chinese new style:, This creation is another structure of light guide membrane of illuminated keyboard, which will be-reference The light guide film is assembled on the bottom surface of a keyboard, wherein a reflective layer is printed and coated on the bottom surface of the light guide film, and a grid-shaped light shielding layer is printed and coated on the top surface of the light guide film. A plurality of ring recess structures are arranged on the light guide film in a suitable array. The light layer has a perforated structure corresponding to the key of the keyboard. It can effectively guide the projected light to the position of the bottom of the key. The single-layer light guide film of this creation has the effect of reducing the thickness and simplifying the assembly, which can improve Those who have uniform light-guiding effect of the light-emitting keyboard. ΦIII. Abstract in English: / 、、 Scope of patent application: ———— A kind of light-guiding film structure for light-emitting keyboard, which is assembled by the light-guiding diaphragm on the bottom surface of the keyboard. ; Wherein a reflective layer is printed and coated on the bottom surface of the light guide film, and a grid-shaped light shielding layer is printed and coated on the top surface of the light guide film, and the light guide film is in a suitable place on the moon. The array is provided with a plurality of ring recess structures. 2. According to the light guide, sheet, and structure of the light-emitting keyboard described in Item 丨 of the patent application scope, wherein the light-shielding layer corresponds to the perforated structure of the keyboard keys.俾 Can effectively guide the projected light to the position of the character key. ▲ 3. According to the light guide of the light-emitting keyboard described in the scope of the patent application, the light guide: sheet, '. Structure, in which a plurality of ring recesses on the light guide film Tectonic system corresponds to keys The position of the dial key. * 4 According to the two light-guiding, sigma structures of the illuminated keyboard described in item 1 of the scope of the patent application, the top surface of the light-guiding film is printed with a plurality of ink reflective dot structures. 5. According to the light-guiding structure of the illuminated keyboard according to item 2 of the scope of the patent application, where the system includes: several bridges, several light-transmitting keycaps, several light-transmissive elastic elements, -light-transmitting circuit boards and- The key frame plate is pivotally connected to the top edge of the bridge on the bottom surface of the light keycap, and the bottom edge of the bridge is correspondingly dragged on the key frame plate. The pressing part on the bottom surface of the optical keycap, in which the plurality of light bombs! Raw 7L pieces are correspondingly fixed on a gasket ', and the gasket is set with M432082 on the top surface of the key frame plate, and the light transmission The elastic element is correspondingly disposed on the top surface of the through hole of the transparent film circuit board and the key frame board, and the through hole of the key frame board corresponds to the perforation position of the light shielding layer. 6. According to the light guide membrane structure of the light-emitting keyboard according to item 5 of the scope of the patent application, the light-transmitting thin financial circuit board has several circuits formed thereon for inputting signals to the keys, and the thin-film circuit board should be transparent. Among the optical keycaps: the point positions are respectively formed with-circuit breakpoints, and the pressing posts in the elastic ridge can press down and touch the conductive diaphragm circuit board, and are located at the bottom edge of the thin film circuit board. Several light emitting diode LEDs are electrically connected.

TW087110925A 1997-06-13 1998-07-07 Isocyanate compositions for blown polyurethane foams TW432082B (en)

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AR015885A1 (en) 2001-05-30
BR9810613A (en) 2000-08-29
TR199902970T2 (en) 2000-05-22
DE69803669T2 (en) 2002-08-14
US20020022674A1 (en) 2002-02-21
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US6590005B2 (en) 2003-07-08
AU8211998A (en) 1998-12-30
CA2289530A1 (en) 1998-12-17
DE69803669D1 (en) 2002-03-14
US6455601B1 (en) 2002-09-24
SK170899A3 (en) 2000-06-12
US6248802B1 (en) 2001-06-19
NZ501122A (en) 2002-04-26
CN1117781C (en) 2003-08-13
WO1998056847A1 (en) 1998-12-17
US20030078310A1 (en) 2003-04-24
AU731538B2 (en) 2001-03-29
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MY116748A (en) 2004-03-31
KR100505774B1 (en) 2005-08-04

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